When setting or retrieving system wide attributes such as the smt-snooze-delay or dscr we should only be concerned with online cpus/threads.  Offline cpus/threads will not have these attributes in their sysfs directory.
When setting or retrieving system wide attributes such as the
smt-snooze-delay or dscr we should only be concerned with online
cpus/threads.  Offline cpus/threads will not have these attributes
in their sysfs directory.

Signed-off-by: Nathan Fontenot <4b7bfe500077bf77c5456931a34b0b70e36e0bc6@austin.ibm.com>

mdroth/powerpc-utils,leitao/powerpc-ibm-utils-debian,mdroth/powerpc-utils,kamalesh-babulal/powerpc-utils,tyreld/powerpc-utils,kamalesh-babulal/powerpc-utils,kamalesh-babulal/powerpc-utils,tyreld/powerpc-utils,shenki/powerpc-utils,shenki/powerpc-utils,mdroth/powerpc-utils,shenki/powerpc-utils,leitao/powerpc-ibm-utils-debian,leitao/powerpc-ibm-utils-debian,tyreld/powerpc-utils